Pakistani Reservoir
when you're so lazy you don't even bother to take a shower, you just sit in the tub and let your pee be the shower
He sat in the tub and let his pee be the shower, he was that lazy.
She didn’t even wash her hair, she just peed in the tub and called it a shower.
My brother didn’t get up, he just peed in the tub and let it be the Pakistani Reservoir.